Example:
Create a site with at least 2 students
Add one of the students to a group
Go to Lesson Builder tool
Add a text item (Like "Main Page Visible to All")
Add a subpage with a text item on like "Subpage visible only to group")
Go back to the main page, edit the subpage for the groups it's visible to (select the group you created)
Add another subpage
Add a text item (Like "Subpage visible in the future")
Go back to the main page, edit the new subpage and click "Hide page until the following date (the page will be listed with the release date)" Select a date in the future.
Hit Print all as the instructor all pages should display
Now logoff and enter as a student in the group going to the Lesson
The student only see the first text and subpage
Click Print all, they should see only the first text and "Subpage visible only to a group"
Now logoff and enter as the other student not in the group
The student should only see the "Visible to All" text
When clicking "Print Subpage" the student should also only see the "Visible to All text"
The issue is that the students see text they shouldn't see
Ideally the test would also verify that the students can see the subpage after the release date, but this is probably a separate test.

Description

In testing the new "Print All" feature it was discovered that subpage restrictions such as group and hidden status do not apply against this feature. Students are able to see all items, even those they should not have access to using this. This is a blocker that will be fixed prior to the 19.0 release.